ARUP's Laboratory Test Directory

0020471: Amylase, Urine

Test Mnemonic: UAMY
Methodology: Enzymatic

Performed: Sun-Sat

Reported: Within 24 hours

Specimen Required:  
Collect: 24-hour or timed urine collection. Specimen must be refrigerated during collection.

Transport: 10 mL aliquot from a well-mixed 24-hour or timed collection at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.5 mL aliquot from a well-mixed 24-hour or timed collection at 2-8°C.

Remarks: If pH is < 6, adjust pH to greater than or equal to 6 by adding 5% NaOH (approximately 2 mL per liter). Mix well. Amylase is not stable in acidified samples (pH < 6) and decreases of up to 30% may occur. Record total volume and collection time interval on transport tube and test request form.

Unacceptable Conditions: Frozen specimens. Specimens containing acetic acid, boric acid (sodium formate), concentrated HCl, or urine preservatives containing hexamethylenetetramine or mercuric acid.

Stability: Ambient: 1 week; Refrigerated: 1 month; Frozen: Unacceptable

Reference Interval:
0.6-12.0 U/hr

CPT Code(s):
82150